Function cf_FindRealFileNameCaseInsensitive

cfile/cfile.cpp:364–399

}

std::filesystem::path cf_FindRealFileNameCaseInsensitive(const std::filesystem::path &fname,
                                                             const std::filesystem::path &directory) {
  // Dumb check, maybe there already all ok?
  if (exists((directory / fname))) {
    return fname.filename();
  }

  std::filesystem::path result, search_path, search_file;

  search_path = directory / fname.parent_path();
  search_file = fname.filename();

  // If directory does not exist, nothing to search.
  if (!std::filesystem::is_directory(search_path) || search_file.empty()) {
    return {};
  }


  // Search component in search_path
  auto const &it = std::filesystem::directory_iterator(search_path);

  auto found = std::find_if(it, end(it), [&search_file, &search_path, &result](const auto& dir_entry) {
    return stricmp(dir_entry.path().filename().u8string().c_str(), search_file.u8string().c_str()) == 0;
  });

  if (found != end(it)) {
    // Match, append to result
    result = found->path();
    search_path = result;
  } else {
    // Component not found, mission failed
    return {};
  }

  return result.filename();
}

// look for the file in the specified directory
static CFILE *open_file_in_directory(const std::filesystem::path &filename, const char *mode,